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Material failure theory is an interdisciplinary field of materials science and solid mechanics which attempts to predict the conditions under which solid materials fail under the action of external loads. The failure of a material is usually classified into brittle failure (fracture) or ductile failure (yield). Depending on the conditions (such as temperature, state of stress, loading rate) most materials can fail in a brittle or ductile manner or both. However, for most practical situations, a material may be classified as either brittle or ductile.

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  • نظرية فشل المواد (ar)
  • Teorías de falla (es)
  • Material failure theory (en)
  • Teoria de falha dos materiais (pt)
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  • نظرية الفشل هي علم التنبؤ بالشروط اللازمة التي تحتها يحصل فشل في مادة صلبة تحت تاثير قوى مطبقة. فشل المواد يصنف عادة إلى فشل هش (كسر) أو فشل مرن (خضوع) اعتمادا على عدة شروط (مثل درجة الحرارة، حالة الضغط، معدل التحميل...) يمكن أن يحدث الفشل في معظم المواد ككسر أو خضوع أو كلاهما. على أية حال وفي معظم الحالات العملية، يمكن تصنيف المواد كهشة أو خضوعة فقط. على الرغم من أن نظرية الفضل تم تطويرها لأكثر من 200 سنة، مستوى قبولها لم يصل بعد لمستوى القبول الذي تتمتع به ميكانيكا الوسائط المستمرة. (ar)
  • Se conocen como teorías de fallo(a) elástico o criterios de fallo(a) elástico a los criterios usados para determinar los esfuerzos estáticos permisibles en estructuras o componentes de máquinas. Se utilizan diversas formulaciones, dependiendo del tipo de material que se utiliza. (es)
  • Material failure theory is an interdisciplinary field of materials science and solid mechanics which attempts to predict the conditions under which solid materials fail under the action of external loads. The failure of a material is usually classified into brittle failure (fracture) or ductile failure (yield). Depending on the conditions (such as temperature, state of stress, loading rate) most materials can fail in a brittle or ductile manner or both. However, for most practical situations, a material may be classified as either brittle or ductile. (en)
  • Teoria de falha é a ciência de prever as condições sob as quais um material sólido falha quando submetido a cargas externas. A falha de um material é normalmente classificada em falha frágil (fratura) ou falha dúctil (escoamento). Dependendo das condições (tais como temperatura, estado de tensões, taxa de carregamento) muitos materiais podem falhar de um modo frágil ou dúctil, ou ambos. Contudo, na maioria das situações práticas, um material pode ser classificado como ou frágil ou dúctil. Embora a teoria de falha já esteja em desenvolvimento a mais de um século, o seu nível de aceitabilidade ainda está para chegar ao da mecânica do contínuo. (pt)
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